SP0710XR50 Backwash Valve Coupling, Multiport control Valve Assembly Compatible with Hayward DE Filters Pro-Series Vari-Flo, 1-1/2-inch NPT Ports, 6 Positions control valve is up for auction in Patio, Lawn & Garden. The current bid is $1.00, 99% below the $76.79 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.